Home / 86,582.30-129,873.45-72,002.30

Finding the Fourth Proportional to 86,582.30, 129,873.45 and 72,002.30

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Solution

The fourth proportional to 86,582.30, 129,873.45 and 72,002.30 is: 108,003.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,582.30 : 129,873.45 = 72,002.30 : x
  2. Step 2: Convert to fraction form
    86,582.30/129,873.45 = 72,002.30/x
  3. Step 3: Cross multiply
    86,582.30x = 129,873.45 × 72,002.30
  4. Step 4: Simplify right side
    86,582.30x = 9,351,187,108.94
  5. Step 5: Solve for x
    x = 9,351,187,108.94/86,582.30
  6. Step 6: Final answer
    x = 108,003.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.